I'm a big fan of local oral history gathering projects. Throw in some alternative walking tours from locals and we can offer them for free and address two different proposals here.
But we need to be careful with our selections and not lean towards personal affinities. I think viability and scale are key factors. The Pennhurst Memorial seems the most suitable of this batch since the funds would go to one organization in a discreet amount that goes toward specific programs. The other suggestions, though noble, seem very daunting in scale. The oral history project amongst three different organizations is intriguing, how would 3,000 in Steem get that off the ground?